000
AGXX40 KNHC 210449
MIMATS

MARINE WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1250 AM EDT SUN SEP 21 2008

MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...
CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

UPPER LEVELS...
WEAK TROUGH OVER THE WESTERN GULF OF MEXICO AND RIDGE OVER THE 
REMAINDER OF THE AREA. TROUGH WILL WEAKEN OVER THE GULF OF 
MEXICO AND MOVE EAST ACROSS THE SOUTHEAST U.S. TO ALONG 80W BY 
TUESDAY. RIDGE WILL WEAKEN AND THE TROUGH WILL REMAIN IN PLACE 
TUESDAY THROUGH THURSDAY WITH A FLAT PATTERN OVER THE AREA 
THURSDAY.

SURFACE...
TROUGH OVER THE CARIBBEAN AND WEAK RIDGE NORTH OF THE AREA. 
RIDGE WILL STRENGTHEN THROUGH TUESDAY AND LOW IS FORECAST TO 
DEVELOP OVER THE ATLANTIC JUST NORTHEAST OF PUERTO RICO MONDAY 
AND REMAIN STATIONARY THROUGH TUESDAY THEN DRIFT NORTH 
WEDNESDAY AND THURSDAY. THE STRENGTHENING RIDGE WILL INCREASE 
THE PRESSURE GRADIENT AND HENCE THE NORTHEAST WINDS OVER THE 
NORTHERN PART OF THE AREA TUESDAY THROUGH THURSDAY. THE LOW 
PRESSURE COULD POSSIBLY DEVELOP INTO A TROPICAL CYCLONE.
 
WARNINGS...

ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER LL. TROPICAL PREDICTION CENTER.